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Finding the Fourth Proportional to 328,856.78, 453,860.64 and 273,568.43

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Solution

The fourth proportional to 328,856.78, 453,860.64 and 273,568.43 is: 377,556.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,856.78 : 453,860.64 = 273,568.43 : x
  2. Step 2: Convert to fraction form
    328,856.78/453,860.64 = 273,568.43/x
  3. Step 3: Cross multiply
    328,856.78x = 453,860.64 × 273,568.43
  4. Step 4: Simplify right side
    328,856.78x = 124,161,942,723.60
  5. Step 5: Solve for x
    x = 124,161,942,723.60/328,856.78
  6. Step 6: Final answer
    x = 377,556.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.